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一种适用于零中频接收机的CMOS高IIP2混频器 被引量：1

CMOS High-IIP2 Mixer for Direct Conversion Receivers
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摘要 讨论了混频器IIP2对于零中频接收机的重要性,对导致CMOS双平衡Gilbert混频器IIP2下降的因素进行了系统而深入的分析。在考虑电路的不匹配性和寄身参数的情况下,介绍了多种提高混频器IIP2的方法。同时,提出了一种鲁棒性非常好,并且适合低电源电压应用的高IIP2混频器结构:"交流耦合"混频器。该电路采用CMOS 90 nm工艺实现。仿真结果显示,该混频器可达到92 dBm的IIP2和9 dB的电压转换增益,在1.2 V电源电压下,功耗为9.6 mW。 The importance of the mixer IIP2 to zero-IF receivers was discussed, and an in-depth analysis of the 2nd-order intermodulation distortion mechanism in DCR mixers was presented. Methods and innovative circuits were introduced to improve degradation of the mixer IIP2 due to device mismatches and nonlinearity. Finally, an ＂AC coupling mixer＂ was proposed as a very robust way to increase mixer IIP2, which is suitable for low-voltage zero-IF receivers. The mixer was implemented in CMOS 90 nm technology. Simulation results indicated an IIP2 of 92 dBm and a voltage gain of 9 dB. Operating at 1.2 V supply voltage, the circuit consumes 9. 6 mW of power.
作者 张琼娜 Leo de Vreedes 闵昊
机构地区 复旦大学专用集成电路与系统国家重点实验室 Delft University of Technology
出处 《微电子学》 CAS CSCD 北大核心 2008年第4期569-573,577,共6页 Microelectronics
基金 NXP(荷兰)资助
关键词 直接混频(零中频) 接收机 混频器 输入二阶截取点 Direct conversion （Zero-IF） Receiver Mixer IIP2
分类号 TN773 [电子电信—电路与系统] TN432 [电子电信—微电子学与固体电子学]
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参考文献8

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同被引文献10

  • 1PULLELA R S,SOWLATI T,ROZENBLIT D.Low flicker-noise quadrature mixer topology[C] // Int Sol Sta Circ Conf.2006:1870-1879.
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  • 7ZHOU S N,CHANG M-C F.A CMOS passive mixer with low flicker noise for low-power direct-conversion receiver[J].IEEE J Sol Sta Circ,2005,40(5):1084-1093.
  • 8DARABI H,CHIU J.A noise cancellation technique in active RF-CMOS mixers[J].IEEE J Sol Sta Circ,2005,40(12):2628-2632.
  • 9王良坤,马成炎,叶甜春.低噪声和高增益CMOS下变频混频器设计[J].微电子学,2008,38(5):674-678. 被引量：5
  • 10庄海孝,马成炎,叶甜春,孟新.一种应用于GPS射频前端的低噪声混频器[J].微电子学,2009,39(2):146-149. 被引量：2

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微电子学
2008年 第4期

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